Android limiting CPU all of a sudden

[Sunny Rio]

I run Boinc (scientific distributed computing) on my Android phone (version 12). A few months ago, it suddenly makes Boinc run half speed (Boinc's own reporting system). I'm running one program on each core, and each one is showing 50% usage, used to be 100%. The phone is cool. It used to be warm. So it's not overheating, and is clearly doing less work. Any ideas what might cause this? I know the OS tends to interfere if you're "overloading" the system. The phone has no problems running anything else like games. If I tell Boinc to use 4 cores out of 8, they are fully used. But I used to be able to run 8.

 

[ocnbrze]

What phone do you have? Have you tried rebooting your phone? How full is your storage?

 

[Sunny Rio]

Motorola G31. I have rebooted. Storage 38% free.

 

[ocnbrze]

i am not familiar with the app. i do not think there is a setting or anything on your phone that you can tweek to make it run better. is the app up to date? it does not appear in the play store. do they have an android 12 version?

you can also post something on their message board:BOINC Message boards

the only thing i can think of is doing a hard reset, but that seems kind of drastic with no guarantee that it will work.

 

[nickdalzell]

Did Android incorporate Apple's infamous CPU throttle when battery health drops below a certain point?

 

[ocnbrze]

Did Android incorporate Apple's infamous CPU throttle when battery health drops below a certain point?

this article suggests that it might be with android, depending on the m,anufacturers.

https://www.getdroidtips.com/test-smartphone-cpu-and-gpu-throttling/

@op you might want to try the cpu test app that is linked in the above article.

 

[Sunny Rio]

Looks like the Motorola G31 has this locked.

Me: What are the cpu clock speeds for the Motorola G31
AI: The Motorola G31 is equipped with a MediaTek Helio G85 processor. The CPU configuration for this processor includes:

• Two Cortex-A75 cores: These cores are clocked at up to 2.0 GHz.
• Six Cortex-A55 cores: These cores are clocked at up to 1.8 GHz.

So I ran CPU Throttling Test - Apps on Google Play because the one in your link no longer exists, and it showed it running 50% of this speed, slowing from full to half in the first minute.

ME: How do i stop a phone throttling the cpu when I do heavy work on it?
AI: Enable Performance Mode: Some phones have a performance mode that optimizes CPU and GPU performance. Check your phone's settings under Battery or Performance to see if this option is available.
ME: I can't find how to enable performance mode
AI: On the Motorola G31, there isn't a specific "Performance Mode" feature like you might find on some other smartphones.

Well that's that then. Misadvertising in the extreme. Like a 140mph car which can only do so for one minute, and will only do 70mph continuously. Pity, because Motorola is the least annoying company I've come across so far.

So why is it throttling when it's not overheating?